Combination screen and ventilator



COMBINATION SCREEN AND VENTILATOR Filed March 1923 I I 17 3o I INVENTOR. H1. .7" fiomas Patented Aug. 21, 1923.

HARRY L. THOMAS, 0F PHILADELPHIA, PENNSYLVANIA.

COMBINATION SCREEN AND VENTILATOR.

Application filed March 7, 1923. Serial No. 628,410.

the structure shown in my prior Patent No.

1,302,729, granted May 6, 1916, for combination screen and ventilator.

An important and more specific object of the invention is to improve the structure of the clamping structure at the ends of the screen whereby the sections thereof are held in engaged relation to the window.

A further object of the invention is to provide a structure in a device of this character whereby the engagement of the sections is such that they are more readily adjusted to fit the same within a window, an important object of the construction being to eliminate the binding usually taking place in devices of this character after they have been in use for sometime.

A still further object of the invention is to provide a novel and improved means for attaching the screen in structures of this character.

These and other objects I attain by the construction and arrangement shown in the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment 'of my invention and wherein like reference characters designate like parts throughout.

In the drawings Figure 1 is a perspective view showing a combined screen and vetilator constructed in accordance with my invention and positioned in a window;

Figure 2 is a section on line 2-2 of Figure 1;

. Figure 3 is a perspective of an end of the screen showing the locking plate; 7

Figure 4 is a detailed sectional view showing the screen retaining strips;

Figure 5 is an enlarged detailed sectional view showing the interlocking engagement of the movable end plate with the flange of the section; and

Figure 6 is a perspective of the locking plate attached and before application to the section.

Referring now more particularly to the drawings, the numerals 10 and 11 indicate the two sections of a screen each comprising a downwardly inclined face 12 and an angularly disposed upwardly inclining face 13. The upwardly inclining face is provided with an elongated 0 ening 14, the edges of which are engaged y attaching strips 15. Them attaching strips 15 each comprise a Z-shaped piece of metal receiving between one horizontal flange 16 thereof and the inclined flange 17 the metal of the inclined" portion 13 at the edge of the opening and etween the other horizontal flange18 and the inclined flange 17 the edge of the screen 19 covering the opening 14.

Each of the sections 10 and 11 have formed upon the lower edge of the downwardly inclining face 12 thereof a flange 2O flatly engaging the sill and upon the upper edge of the upwardly inclining face 13 thereof a vertical flange 21. The flanges 20 and 21 of the sections are provided upon the edges thereof with curved extensions 22,

the extremities of which are directed toward the flanges in spaced relation thereto 50 that the flange 20 or 21 of the section 11 may be received between the flange 20 or 21 of the section 10 as the case may be and the ex tremitv of its extension 22, the end of the extension 22 resiliently engaging the same and maintaining the same inproper position.

The outer end of each section 10 and 11 is closed by an end plate 23 which is substantially triangular and secured at one edge to the upper face 13 and along a second edge to the downwardly inclined face 12. The attachment of the end plates 23 to the downwardly inclined face 12 is in the form of a flange 24 formed upon the end of the inclined face 12 and secured to the end plate 23 in such manner as to aflord between the flange and the end plate a space 25, the purpose of which will presently appear. The third edge of the end plates 23 has formed thereon a vertically extending flange 26 extending at substantially right angles thereto and adapted to engage against one face of a sash guide rail 27 The lower edge of the flange has formed therein a notch 28 adapted for the reception of asecuring element which may be engaged with 8 "Fa to 1 vent accidental disengagement of the flange. The'numeral 29 designates locking plates each having at one side thereof an outwardly extending tongue 30, the metal of the plate being slotted at the base of the tongue in alignment with the edges of the tongue, as indicated at 31, to continue the tongue to a point spaced inwardly from the edge of the plate. This edge of the plate is adapted to slidably engage within the space 25 between the flange 24 and the end plate 23 and the tongue 30 is bent about the flange and inclined face 12 so that it resilientl engages thereagainst and maintains the e .ge of the plate in position beneath the flange in which it is slidable. The plate 29 has a vertical edge having a right angular flange 32 which when the locking plate is in position upon the end plate 23 parallels the flange 26 of the end plate. The locking plate is provided with a flange 33 for engagement with the fingers so that it may be shifted. It will be obvious that when thedevice is positloned with the flanges 26 at the outer face of the guide rail, the same may be clamped into position by forcing the clamping plates downwardly until the flanges 32 thereof engage against the inner faces of the rails and that when so engaged the sections will be firmly heldin position within the window.

Since the device may be constructed of sheet metal having a great inherent resiliency, it will be obvious that an excellent fit of the sections may be provided at all times and at the'same time the device produced at a very low manufacturing cost. The clamping of the screen within the openings provides a structure whereby the screen is easily removed, the rough edges thereof protected and the appearance of the com pleted device generally improved. Since the flanges 26 present but a slight thickness, usually less by far than the play between a sash and its guiding rails, in the majority of instances the window can be closed with the device installed in position and without the ne-:essity of removing the same.

I claim The combination with a combined screen and ventilator of the type described including screen sections having end members provided at one edge thereof with vertically disposed flanges adapted to engage one side of the coacting guide rail of a window sash and inclined edges at their junctions with the sections, of plates slidably engaging said end members and having slidable interlocking engagement with the sections at the last named edges of the end members, said plates being provided with flanges paralleling the flanges of the endmembers.

2. In combination with a combined screen and ventilator of the type described including screen sections having end members provided at one edge thereof with vertically disposed flanges adapted to engage one side of the coacting guide rail of a window sash and inclined edges at their junctions with the sections of plates slidably engaging said end members and having interlocking engagement with the sections at the point of engagement of the sections with the end members, said plates being provided with tongues preventing disengagement or removal thereof from said interlocking engagement and with flanges paralleling the flanges of the end members.

3. The combination with a combined screen and ventilator of the type described including screen sections having end members provided at one edge thereof with vertically disposed flanges adapted to engage .one side of the coacting guide rail of a window sash, and inclined edges at their junctions with the sections, the engagement of the sections with theend plates at said inclined edges ihcluding a flange in spaced relation to the end sections and affording between the end sections and the flange guideways, of plates having their edges slidably disposed in said guideways and having tongues extending about the flange and the adjacent face of the section maintaining the plates against withdrawal from such face, the opposite edges of the plates being provided with flanges parallelling the flanges of the end members.

In testimony whereof I hereunto afiix my signature.

HARRY L. THOMAS. 

